The usage and precautions of the pointer multimeter are as follows:
1. The universal meter should be placed horizontally. If the pointer does not refer to the zero position, you can adjust the mechanical zeroing screw on the meter head.
2. The red pen should be inserted into the positive jack of the watch, and the black pen should be inserted into the negative jack of the watch. When measuring, select the gear according to the type and size of the measured power.
3. When measuring the voltage, connect the meter to the circuit in parallel. When measuring current, connect the meter in series with the circuit. When measuring the resistance, be careful that the measured resistance cannot be energized, and the fingers cannot touch both ends of the resistor at the same time.
4. If you do not know the magnitude of the measured voltage or current, you should first test it with a large range, then select the appropriate range and the correct method to avoid excessive deflection of the hands and damage the meter. The selected range month is close to the measured value, and the measured value is more accurate.
5. When measuring high voltage or high current, do not touch the metal part of the hand holding the test pen. Do not turn the transfer switch knob energically.
6. It is not allowed to measure the voltage with current or ohms.
7. After the multimeter is used, turn the switch to the highest voltage of DC voltage or AC voltage.
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